In a joint statement with former Secretary of State Hillary Rodham Clinton, the former president said the court recognized that discrimination toward any group holds all Americans back in efforts to form a more perfect union.
The Clintons also said they were encouraged that gay marriage may soon resume in California.
They congratulated the advocates and plaintiffs in the cases.
Read the Clintons' full statement below:
By overturning the Defense of Marriage Act, the Court recognized that discrimination towards any group holds us all back in our efforts to form a more perfect union. We are also encouraged that marriage equality may soon return to California. We applaud the hard work of the advocates who have fought so relentlessly for this day, and congratulate Edie Windsor on her historic victory.
Below, a slideshow with more politicians' reactions: